whatever your business challenge, and get 3 years interest-free financing on tempur-pedic. but hurry, sleep train's inventory clearance sale ends columbus day. ♪ your ticket to a better night's sleep ♪ >>> in the modern era of presidential debating on tv, the candidate who is ahead in the polls coming out of the debates has always gone on to win the presidency. obviously, heading into the debates, starting tonight, president obama is ahead in the polls. if the debates starting tonight are enough to flip that, to propel mr. romney into the lead, then statistically speaking, mr. romney will be in good shape for the november election. if the debates are not enough to flip the polls in plm mr. romne favor, he would have to pull off a modern american miracle to win the election in november. chuck todd joins us from the debate site at the university of denver. chuck, what are you watching for tonight? >> the buzz word, the buzz phrase of "middle class." essentially, the reason romney is behind is because he's been losing that attribute to president obama by double-digit margi